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package com.sun.xml.bind.v2.runtime.unmarshaller;
import com.sun.xml.bind.Util;
import javax.xml.bind.JAXBException;
import javax.xml.bind.UnmarshallerHandler;
import com.sun.xml.bind.WhiteSpaceProcessor;
import com.sun.xml.bind.v2.runtime.ClassBeanInfoImpl;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.xml.sax.Attributes;
import org.xml.sax.Locator;
import org.xml.sax.SAXException;
/**
* Receives SAX events and convert them to our internal events.
*
* @author Kohsuke Kawaguchi
*/
public final class SAXConnector implements UnmarshallerHandler {
private LocatorEx loc;
private static final Logger logger = Util.getClassLogger();
/**
* SAX may fire consecutive characters event, but we don't allow it.
* so use this buffer to perform buffering.
*/
private final StringBuilder buffer = new StringBuilder();
private final XmlVisitor next;
private final UnmarshallingContext context;
private final XmlVisitor.TextPredictor predictor;
private static final class TagNameImpl extends TagName {
String qname;
@Override
public String getQname() {
return qname;
}
}
private final TagNameImpl tagName = new TagNameImpl();
/**
* @param externalLocator
* If the caller is producing SAX events from sources other than Unicode and angle brackets,
* the caller can override the default SAX {@link Locator} object by this object
* to provide better location information.
*/
public SAXConnector(XmlVisitor next, LocatorEx externalLocator ) {
this.next = next;
this.context = next.getContext();
this.predictor = next.getPredictor();
this.loc = externalLocator;
}
@Override
public Object getResult() throws JAXBException, IllegalStateException {
return context.getResult();
}
public UnmarshallingContext getContext() {
return context;
}
@Override
public void setDocumentLocator(final Locator locator) {
if(loc!=null)
return; // we already have an external locator. ignore.
this.loc = new LocatorExWrapper(locator);
}
@Override
public void startDocument() throws SAXException {
if (logger.isLoggable(Level.FINER)) {
logger.log(Level.FINER, "SAXConnector.startDocument");
}
next.startDocument(loc,null);
}
@Override
public void endDocument() throws SAXException {
if (logger.isLoggable(Level.FINER)) {
logger.log(Level.FINER, "SAXConnector.endDocument");
}
next.endDocument();
}
@Override
public void startPrefixMapping(String prefix, String uri) throws SAXException {
if (logger.isLoggable(Level.FINER)) {
logger.log(Level.FINER, "SAXConnector.startPrefixMapping: {0}:{1}", new Object[]{prefix, uri});
}
next.startPrefixMapping(prefix,uri);
}
@Override
public void endPrefixMapping(String prefix) throws SAXException {
if (logger.isLoggable(Level.FINER)) {
logger.log(Level.FINER, "SAXConnector.endPrefixMapping: {0}", new Object[]{prefix});
}
next.endPrefixMapping(prefix);
}
@Override
public void startElement(String uri, String local, String qname, Attributes atts) throws SAXException {
if (logger.isLoggable(Level.FINER)) {
logger.log(Level.FINER, "SAXConnector.startElement: {0}:{1}:{2}, attrs: {3}", new Object[]{uri, local, qname, atts});
}
// work gracefully with misconfigured parsers that don't support namespaces
if( uri==null || uri.length()==0 )
uri="";
if( local==null || local.length()==0 )
local=qname;
if( qname==null || qname.length()==0 )
qname=local;
processText(!context.getCurrentState().isMixed());
tagName.uri = uri;
tagName.local = local;
tagName.qname = qname;
tagName.atts = atts;
next.startElement(tagName);
}
@Override
public void endElement(String uri, String localName, String qName) throws SAXException {
if (logger.isLoggable(Level.FINER)) {
logger.log(Level.FINER, "SAXConnector.startElement: {0}:{1}:{2}", new Object[]{uri, localName, qName});
}
processText(false);
tagName.uri = uri;
tagName.local = localName;
tagName.qname = qName;
next.endElement(tagName);
}
@Override
public final void characters( char[] buf, int start, int len ) {
if (logger.isLoggable(Level.FINEST)) {
logger.log(Level.FINEST, "SAXConnector.characters: {0}", buf);
}
if( predictor.expectText() )
buffer.append(buf,start,len);
}
@Override
public final void ignorableWhitespace( char[] buf, int start, int len ) {
if (logger.isLoggable(Level.FINEST)) {
logger.log(Level.FINEST, "SAXConnector.characters{0}", buf);
}
characters(buf,start,len);
}
@Override
public void processingInstruction(String target, String data) {
// nop
}
@Override
public void skippedEntity(String name) {
// nop
}
private void processText( boolean ignorable ) throws SAXException {
if (predictor.expectText() && (!ignorable || !WhiteSpaceProcessor.isWhiteSpace(buffer)))
next.text(buffer);
buffer.setLength(0);
}
}